Measurements:
°C
°F
CURRENT WEATHER
23:29
Thunder Bay
28°F
SE 8 mph
Feels like: 20°F
Precip: 0%
World Resorts Canada Thunder Bay

Annual Weather

Thunder Bay Air Temperature, °F

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
12
24
36
48
60
72
84
96
19.5
32.7
48.1
64.2
71.1
71.4
64.2
52.5
35.3
25.0
10.3
10.9
17.3
29.3
41.7
53.8
60.2
59.5
52.8
41.8
28.9
18.3
4.8
6.4
Day Temperature   
Night Temperature
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
11
22
33
44
55
66
77
37.3
44.6
53.7
61.4
64.9
60.3
46.7
39.1
32.9
31.2
31.5
32.8

Precipitation Totals, in

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
0.2
0.4
0.7
0.9
1.1
1.3
1.6
0.6
0.6
0.7
0.8
1.2
0.9
1.1
0.7
1.3
0.6
0.3
0.3

Rainy Days During the Year

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
4
1
2
1
2
3
2
2
1
3
2
0
0
Average Wind Speed, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.6
3.3
4.9
6.6
8.2
9.9
11.5
13.2
9.1
9.6
8.4
7
6.6
5.9
6.4
7
9.1
8.5
8.4
8.5
Sunny, Cloudy and Gloomy Days
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0
5
10
15
20
25
30
35
18
15
12
7
6
6
10
12
19
16
17
18
8
9
11
8
11
12
11
9
7
9
7
8
5
6
8
15
14
12
9
10
4
6
4
5
Gloomy days   
Cloudy days   
Sunny days
Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
1.6
3.3
4.9
6.5
8.2
9.8
11.4
3
3.9
5.3
7.8
8.9
9.5
8.5
7.9
4.4
4.7
3.9
3.4

We are using day length and cloud cover information for each day of the month to calculate averages for this chart.

Best Time to Visit Thunder Bay
The most sunny months:
September 15 days
August 14 days
July 12 days
The most warm months:
July 71.4 °F
August 71.1 °F
June 64.2 °F
Warmest sea temperature:
August 65.0 °F
September 61.4 °F
July 60.3 °F
The most cold months:
February 10.3 °F
January 10.9 °F
December 19.5 °F
The most rainy months:
August 3 days
September 2 days
April 2 days
The most windy months:
November 9 mph
December 9 mph
April 9 mph
more details

Thunder Bay on the Weather Map

Canada Resorts:
NAME
F°
Halifax +32
Moncton +30
Montreal +38
Niagara Falls +42
Ottawa +36
Prince Edward Island +30
Quebec +30
Saint John +30
St. John's +24
Sydney +28
Toronto +40
Vancouver +58
Victoria +46
Winnipeg +30
Yellowknife +14
all resorts
24 Hours Weather Forecast
Thunder Bay
Local time: 23:29
06 apr, sunday
0000 28°F
SE
8 mph
0300 26°F
E
5 mph
0600 26°F
E
5 mph
0900 28°F
SE
6 mph
1200 30°F
SE
7 mph
1500 34°F
SE
8 mph
1800 30°F
SE
11 mph
2100 26°F
S
11 mph